Equity Investments (Summary Of Investment In Joint Venture, Income Statement Data) (Details) - WAVE [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Net sales	$ 374.4	$ 392.5	$ 381.8
Gross profit	187.4	185.1	172.9
Net earnings	$ 144.4	$ 142.2	$ 132.4